protective covering is a noun meaning "a covering that is intend to protect from damage or injury". It carries 2 recorded senses.
a covering that is intend to protect from damage or injury
“they had no protection from the fallout”
“wax provided protection for the floors”
the tough natural covering of some organisms
Definitions, synonyms and semantic relations for protective covering come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.